Carbureter.



PATENTED NOV. 19, 1907.

C. G. WALTER.

CARBURETER.

APPLICATION FILED snr'r. 7, 1905.

2 SHEETS-SHEET 1.

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5M Mu PATENTED NOV. 19, 1907.

C. O. WALTER.

GARBURETBR.

APPLICATION FILED SEPT. 7, 1005.

2 SHEETS-SHEET 2.

PATENT cr mes.

CARL WALTER, OF PHILADELPHIA, PENNSYLVANIA,

CARBURE'IER.

v Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed September 7.1905. Serial No. 277.373.

To-all who'm'fit may concern: v

Be it known that I, CARL C. VVALTER, a

; citizen of the United States, residing at Philadelphia, in the countyof Philadelphia, State of Pennsylvania, have invented certainnewanduseful Improvements in Car bureters, of which the following is aspecification.

Objects of the invention are to provide a simple, reliable and efficientcarbureter, well adapted for use in connection with automobiles; toprovidesimple and reliable means for throttling an internal combustionengine; to provide for automatically proper-1 tionin the air and oil orgasolene feeds; to providie for spraying the oil or gasolene feed intothe air under considerable pressure; to

. provide for using some of the attachments of the carburetorforinllating the vehicle tires; and to provide for controlling thecarburetor by means of the foot when the vehicle is running, and bymeans of the hand when it is desired. to start the vehicle.

To these and other ends to be hereinafter set forththe inventioncomprises the im-j provement's to be presently described and finallyclaimed.

. The nature, characteristic features and scopeof the invention will bemore fully mderstood from the iollowmg description taken in connectionwith the accompanying drawings, forming part hereof, and in which Figurelis a top'or plan view of a carbureter, embodying, features of theinvention,

Fig. 2 is a section when on the line 2-2 of Fig, 1, Fig. 3 is asectional View taken on the line of Fig. 1. F 1g. 4 IS a sectionalview-illustrating a foot-actuated controlling valve. Fig. 5 is asectional viewillustrating a handactuated valve, and Fig. 6 is anelevational view illustrating an automobile provided with attachmentse111l orlying leatures of the invention.

' In the drawings 1 is the casing of the carbureter and it is shown asconsisting of two parts detachably connected t'o ether, 2 is the airintake valve, and 3 is the ol -take connection from the carburetor tothe engine. The stem 4 of the valve 2' is provided with a retardingpiston 5, and its upper end '6, constitutes a compression piston.

7 is a cylinder provided with a duct 8, for the fluid as air with whichit is supplied. 8 is a cylinder which cooperates wit 1 the end 6 of thevalve stem and it in turn communicates by way of the opening 9 withanother to move in respect to its adjustable backstop 12 and against theforce of a spring 13. This piston 10 cooperates with a cylinder 14, .towhich oil is supplied, as by means of an intake 15 and from which oil isforced under pressure through a duct or passage 16, Fig. 1, that leadsto the nozzle 17, Fig. 3, from which it is sprayed intothe air. I

19 is a needle valve for regulating the size of the discharge orifice ofthe nozzle 17.

20 is a spring supported battle arranged opposite the discharge end ofthe nozzle and it serves to spray the fluid as it is discharged. Thepurpose of the vent 11 is to permit of the passage of air to and fromthe cylinder 8 and duct 9, so that air maynot become trapped therein.When the valve 2 is opened, for example, by the suction of the engine,the end 6 of the valve stem compressing air in the cylinder 8 and duct 9forces the piston 10 downward so as to expel from the cylinder 14, oilor fluid under pressure by wayof 16 to the nozzle 17, where it isdischarged in the form of spray and mingles with the air. By opposingmore or less pressure in the cylinder 7 to the piston 5, it is possibleto accurately control the extent of the opening of the valve 2, andconsequently the force of the movement oi" the piston 10, so that notonly is the intake of air adjusted, but also is the feed of oiladjusted.

21 is a pump for supplying the fluid as air under pressure through theduct 8 to the piston 5. This pump is geared so as to be driven with theengine and, as shown, this is accomplished by means of an eccentric andeccentric rod 22.

' 23 is a pipe that leads from the pump to ,the duct 8, and it is alsoextended, as at 24,

for a purpose to be presently described. 1f the pump were delivering itsfull pressure upon the piston 5, the valve 2 would not be properlyoperative. However, the pipe 24 is provided with vent devices 25 and 26by means of which an adjustable portion of :the pump pressure is allowedto escape and thus the movement of the valve 2 accurately regulated. Thevent device 25, Fig. 4, is. designed to be operated by the foot. Theportion 27 of it is in communication with the pipe24 and the movablepart 28 has a port 29 which servesto bring the opening 27 into more orless perfect communication communication with the fitting 33.

with the outlet 30 according to the position of the part 28-, which isdetermined by the foot of the Operator acting in opposition. to e Tostart the,engine When it I the'spring 31. is not convenient to place thefoot upon the device 25, the device 26 is provided. This device 26communicates with the pipe 24 and is provided with a needle valve 32,which can be operated by hand,'so as to bring the pipe 24 into more orless perfect The latter ordinarily communicates with the air, but it maybe used in connection with a hose 34 that can be connected to the .tire35.' When so used the pump serves to inflate the I tires. Ordinarily,however, the fitting 33 communicates with the air, and the needle valve32 is used to relieve the pump pressure so as to permit the valve 2 toopen in starting the engine.= After the engine is started the needlevalve may be closed and the. necessary throttling of the engineaccomplished' by means of the foot-actuated de-- 'vice 25.

It will be obvious to those skilled in the artto; which the inventionrelates that mo 'fication's maybe madein details with out departing-fromthe spirit thereof, hence the invention is not limitedyfurther than theprior state of the art may require, but

- Having thus described the nature and objects of my invention, what Iclaim as new and desire-to secure by Letters Patent} s: p :1. Acarbureter provided .Witha fluid fuel feeding piston and its cylinder,an air valve having "a stem provided with a retarding piston, a cylindercooperating with the end of the valvestem and having connections tothefirst mentioned cylinder, a cylinder cooperating with theretarding'piston, and means for creating variable pressure in the lastmentioned cylinder, substantially as described.

2. The combination in a carbureter of a piston and cylinder and theirconnections for spraying fluid fuel, an air valve, a second cylinder,connections between the first and second cy1inders, and a pistonconnected with the air valve and. arranged in the,-sec

0nd cylinder and adapted to operate the first mentioned piston,substantiallyas idcscribed.

J3. In .a carbure'ter the cornbination ofa fluid fuel feeding cylinder,a'piston having a retracting spring,- connections' to said cylinder,connections from said 0 linder includln a spraying device, an a r va ve,and a ven-te cylinder cooperating with the-stem of .the

air valve and 'comimuni'catingtwithsaid .pis-

ton, substantially as described 4. The combination of agas .engine, :a

pump driventhereby, a .carbureter provided with a iluidfuel feeding."piston and cylinder and a spraying device an. air valve, av cylinderfor the stem ofthe air-valve andi'having connection with the cylinder ofthe oil ieeding piston, a piston and cylinder for retarding theopeningof the air valve,jc0nnections 7 0 between the last {mentionedcylinder and the pump, and a deviee'for venting thelast mentionedconnections; substantially as de

